mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-31 14:28:52 +09:00
![Wolfgang Denk](/assets/img/avatar_default.png)
- Add IXP4xx NPE ethernet MAC support - Add support for Intel IXDPG425 board - Add support for Prodrive PDNB3 board - Add IRQ support Patch by Stefan Roese, 23 May 2006 [This patch does not include cpu/ixp/npe/IxNpeMicrocode.c which still sufferes from licensing issues. Blame Intel.]
234 lines
5.6 KiB
C
234 lines
5.6 KiB
C
/**
|
|
* @file IxOsalOsSemaphore.c (eCos)
|
|
*
|
|
* @brief Implementation for semaphore and mutex.
|
|
*
|
|
*
|
|
* @par
|
|
* IXP400 SW Release version 1.5
|
|
*
|
|
* -- Copyright Notice --
|
|
*
|
|
* @par
|
|
* Copyright 2001-2005, Intel Corporation.
|
|
* All rights reserved.
|
|
*
|
|
* @par
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the Intel Corporation nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* @par
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @par
|
|
* -- End of Copyright Notice --
|
|
*/
|
|
|
|
#include "IxOsal.h"
|
|
#include "IxNpeMhReceive_p.h"
|
|
|
|
/* Define a large number */
|
|
#define IX_OSAL_MAX_LONG (0x7FFFFFFF)
|
|
|
|
/* Max timeout in MS, used to guard against possible overflow */
|
|
#define IX_OSAL_MAX_TIMEOUT_MS (IX_OSAL_MAX_LONG/HZ)
|
|
|
|
|
|
PUBLIC IX_STATUS
|
|
ixOsalSemaphoreInit (IxOsalSemaphore * sid, UINT32 start_value)
|
|
{
|
|
diag_printf("%s called\n", __FUNCTION__);
|
|
return IX_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* DESCRIPTION: If the semaphore is 'empty', the calling thread is blocked.
|
|
* If the semaphore is 'full', it is taken and control is returned
|
|
* to the caller. If the time indicated in 'timeout' is reached,
|
|
* the thread will unblock and return an error indication. If the
|
|
* timeout is set to 'IX_OSAL_WAIT_NONE', the thread will never block;
|
|
* if it is set to 'IX_OSAL_WAIT_FOREVER', the thread will block until
|
|
* the semaphore is available.
|
|
*
|
|
*
|
|
*/
|
|
|
|
|
|
PUBLIC IX_STATUS
|
|
ixOsalSemaphoreWait (IxOsalOsSemaphore * sid, INT32 timeout)
|
|
{
|
|
diag_printf("%s called\n", __FUNCTION__);
|
|
return IX_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Attempt to get semaphore, return immediately,
|
|
* no error info because users expect some failures
|
|
* when using this API.
|
|
*/
|
|
PUBLIC IX_STATUS
|
|
ixOsalSemaphoreTryWait (IxOsalSemaphore * sid)
|
|
{
|
|
diag_printf("%s called\n", __FUNCTION__);
|
|
return IX_FAIL;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* DESCRIPTION: This function causes the next available thread in the pend queue
|
|
* to be unblocked. If no thread is pending on this semaphore, the
|
|
* semaphore becomes 'full'.
|
|
*/
|
|
PUBLIC IX_STATUS
|
|
ixOsalSemaphorePost (IxOsalSemaphore * sid)
|
|
{
|
|
diag_printf("%s called\n", __FUNCTION__);
|
|
return IX_SUCCESS;
|
|
}
|
|
|
|
PUBLIC IX_STATUS
|
|
ixOsalSemaphoreGetValue (IxOsalSemaphore * sid, UINT32 * value)
|
|
{
|
|
diag_printf("%s called\n", __FUNCTION__);
|
|
return IX_FAIL;
|
|
}
|
|
|
|
PUBLIC IX_STATUS
|
|
ixOsalSemaphoreDestroy (IxOsalSemaphore * sid)
|
|
{
|
|
diag_printf("%s called\n", __FUNCTION__);
|
|
return IX_FAIL;
|
|
}
|
|
|
|
/****************************
|
|
* Mutex
|
|
****************************/
|
|
|
|
static void drv_mutex_init(IxOsalMutex *mutex)
|
|
{
|
|
*mutex = 0;
|
|
}
|
|
|
|
static void drv_mutex_destroy(IxOsalMutex *mutex)
|
|
{
|
|
*mutex = -1;
|
|
}
|
|
|
|
static int drv_mutex_trylock(IxOsalMutex *mutex)
|
|
{
|
|
int result = TRUE;
|
|
|
|
if (*mutex == 1)
|
|
result = FALSE;
|
|
|
|
return result;
|
|
}
|
|
|
|
static void drv_mutex_unlock(IxOsalMutex *mutex)
|
|
{
|
|
if (*mutex == 1)
|
|
printf("Trying to unlock unlocked mutex!");
|
|
|
|
*mutex = 0;
|
|
}
|
|
|
|
PUBLIC IX_STATUS
|
|
ixOsalMutexInit (IxOsalMutex * mutex)
|
|
{
|
|
drv_mutex_init(mutex);
|
|
return IX_SUCCESS;
|
|
}
|
|
|
|
PUBLIC IX_STATUS
|
|
ixOsalMutexLock (IxOsalMutex * mutex, INT32 timeout)
|
|
{
|
|
int tries;
|
|
|
|
if (timeout == IX_OSAL_WAIT_NONE) {
|
|
if (drv_mutex_trylock(mutex))
|
|
return IX_SUCCESS;
|
|
else
|
|
return IX_FAIL;
|
|
}
|
|
|
|
tries = (timeout * 1000) / 50;
|
|
while (1) {
|
|
if (drv_mutex_trylock(mutex))
|
|
return IX_SUCCESS;
|
|
if (timeout != IX_OSAL_WAIT_FOREVER && tries-- <= 0)
|
|
break;
|
|
udelay(50);
|
|
}
|
|
return IX_FAIL;
|
|
}
|
|
|
|
PUBLIC IX_STATUS
|
|
ixOsalMutexUnlock (IxOsalMutex * mutex)
|
|
{
|
|
drv_mutex_unlock(mutex);
|
|
return IX_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Attempt to get mutex, return immediately,
|
|
* no error info because users expect some failures
|
|
* when using this API.
|
|
*/
|
|
PUBLIC IX_STATUS
|
|
ixOsalMutexTryLock (IxOsalMutex * mutex)
|
|
{
|
|
if (drv_mutex_trylock(mutex))
|
|
return IX_SUCCESS;
|
|
return IX_FAIL;
|
|
}
|
|
|
|
PUBLIC IX_STATUS
|
|
ixOsalMutexDestroy (IxOsalMutex * mutex)
|
|
{
|
|
drv_mutex_destroy(mutex);
|
|
return IX_SUCCESS;
|
|
}
|
|
|
|
PUBLIC IX_STATUS
|
|
ixOsalFastMutexInit (IxOsalFastMutex * mutex)
|
|
{
|
|
return ixOsalMutexInit(mutex);
|
|
}
|
|
|
|
PUBLIC IX_STATUS ixOsalFastMutexTryLock(IxOsalFastMutex *mutex)
|
|
{
|
|
return ixOsalMutexTryLock(mutex);
|
|
}
|
|
|
|
|
|
PUBLIC IX_STATUS
|
|
ixOsalFastMutexUnlock (IxOsalFastMutex * mutex)
|
|
{
|
|
return ixOsalMutexUnlock(mutex);
|
|
}
|
|
|
|
PUBLIC IX_STATUS
|
|
ixOsalFastMutexDestroy (IxOsalFastMutex * mutex)
|
|
{
|
|
return ixOsalMutexDestroy(mutex);
|
|
}
|